Using the Elementar vario PYRO cube elemental analyzer, the authors accomplished high precision test on mass fraction of ambers from different producing areas, and then analyzed the differences between their compositions. After that, by using IRAffinity-1 Fourier transform infrared spectrometer, the authors adopted the transmission method to obtain the absorption spectra. Based on the comparison and analysis of the spectra, the authors found that during the petrifaction of the amber there existed no obvious exchange reaction between the hydrogen in the amber and that surrounding the amber. The infrared absorption spectrum can be used as the important basis to identify the ambers from different producing areas.